" Subplot is not one of the twenty-two steps because it’s not usually present and because it is really a plot of its own with its own structure. But it’s a great technique. It improves the character, theme, and texture of your story. On the other hand, it slows the desire line—the narrative drive. So you have to decide what is most important to you. "

― , The Anatomy of Story: 22 Steps to Becoming a Master Storyteller